Signal casing



Jame 2, 1928. 1,674,981

S. MILLS ET AL SIGNAL CASING Original Filed Dec. 18. 1922 H IIIIIII II 1I 0 F1 5, [Even 120mg.

' ,Jzmuel Mills Tflamas $1 8601? Patented June 26, 1928.

entree STAT-ES 1,674,981 rarest caries.

SAIIIUEL MILLS, OF OAKLAND, AND THOMAS G. PLANT, OF SAUSALITO,CALIFORNIA.

SIGNAL casinos Original application filed December 18, 1922, Serial No.607,587.

October 6, 1923.

The invention is for use in connection with indicating mechanism of thetype described and illustrated in our co-pending appllcations,filedMarch 31, 1922, Serial No. 457,234, and December 18, 1922, Serial No.607,587, respectively, the. present application havlpg been divided outof application Serial 1N0. (507,587 mentioned above. The principalobject of the present invention isto provide a signal casing having aplurality or signal lights therein and means for preventing the lightfrom one signal from mtert ermg with the light from any of the otherS]P,'Il2tlS, t111Cl also means for preventing the light trom any onesignal from showing through the apertures provided for any other signallight. It is a further ob ect ot the invention to provide a casing ofthis sort which will permit of the removal of the cover portion withoutdisturbing the signal lights. I

In accomplishing these objects we utilize a base portion to which ishinged a cover portion in which suitable apertures are arranged to fitover the various compartments in the casing in which the signal lightsare placed. Vi e preferably construct the base port-ion with a partitionwhich serves the double purpose of dividing the casing intocompartments, and also providing a base to which the signal lights maybe secured.

A preferred form of the invention is eX- emplified in the followingdescription, and illustrated in the accompanying drawings, in. whichFigure 1 is a side elevation of the signal casing.

Figure 2 is a perspective view of the regulating shutters and adjustingscrew.

Figure 8 is a perspective view of the in terior of the front portion ofthe signal casing, showing the position of the regulating shutters.

Figure 4 is a cross-sectional view of the signal casing.

Figure 5 is a cross-sectional view on line AA of Figure 4.

In carrying out the invention we construct the signal casing with a baseportion 47 and a cover portion 48, secured to the base por tion byhinges 49 and tastenings 50. Cover portion 48 is provided in front andon each side with two apertures, the aperture at the upper end of thecover portion such as at 51 being fitted with lenses of one color, andthose at the lower end, as at 52, with lenses Divided and thisapplication filed Serial No. 666,936.

of a ditl'erent color, as for instance white in the upper apertures todenote Ahead and red in the lower apertures, to denote ristern. Theinterior of the signal box is divided into upper and lower halves, bypartition member 53, secured to. base por tion 47. On each side of thispartition means to secure signal lights in place are provided. In. theform of the invention here illustrated, electric lamps 54 and 55 areshown, a pair of lamps wlth a corresponding pair of sockets beingprovided so that the lamps may be connected in series parallel in theirrespective signal circuits in order to insure the operation of at leastone signal light in the event that one of the pair gets out of order.Partition 53 is fitted closely to the inner surface of the two halves ofthe signal casing, so that light from one compartment cannot leak intothe other. In order to regulate the amount of the light given out by theapertures in the signal casing, shutters 56 and 57 are fitted withincover portion 48, as shown in Figure 3. Shutter 57 is provided withthree apertures 58 at one end, which fit over the correspondingapertures in cover 48, and is also provided with V-shaped notches 59atthe opposite end to fit over the corresponding apertures at the otherend of cover 48. Shutter 56 has similar openings 60 and notches 61, sothat by turning adjusting screw 62 one end of which has a left handthread engaging lug 63 on shutter 57 and the other a. right hand threadengaging lug 64 on shutter 56, shutters 56 and 57 can be movedlongitudinally one over the other in a manner to increase or decreasethe size of the openings formed by apertur 58 and notches 61 and theopenings formed by apertures 60 and notches 59, thus allowing more orless light to show through the corresponding openings in cover 48. Themeans thus provided to regulate the amount of light given out by thesignal casing add greatly to the etficiency of the device, and permit itto be used during the day or night on the bridge of a vesselwithoutinterference with the observance of other instruments.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent, is:

In a signal casing, a base, a cover fitting tightly on said base andforming a chamber therewith, said cover having a plurality of pairs ofapertures forming two groups thereof, a source of light for each of saidgroups, a partition on said base supporting said source of light anddividing said chamber into light: proof compartn-ientseach adjacentone'of said aperture groups, means includ ing a pair of superposedapertured shutters extending over allol said apertures forsimultaneously regulating the amount of light passing from all of saidlightprooi C0111- SAMUEL MILLS. THOMAS G vPIlse-L lli?-

